package com.itheima.reggie.controller;

import com.itheima.reggie.result.R;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.UUID;

@RestController
@RequestMapping("/common")
@Slf4j
public class CommentsController {
    @Value("${reggie.path}")
    private String path;

    @PostMapping("/upload")
    public R<String> upload(MultipartFile file) {
        log.info(file.toString());
        //原文件名
        String originalFilename = file.getOriginalFilename();
        String substring = originalFilename.substring(originalFilename.lastIndexOf("."));
        //uuid重命名
        String fileName = UUID.randomUUID().toString() + substring;
        //判断目录是否存在
        File f = new File(path);
        if (!f.exists()) {
            f.mkdirs();
        }

        try {
            file.transferTo(new File(path + fileName));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return R.success(fileName);
    }


    @GetMapping("/download")
    public void download(String name, HttpServletResponse response) throws IOException {
        //输入流
        FileInputStream fileInputStream = new FileInputStream(new File(path + name));
        //输出流
        ServletOutputStream outputStream = response.getOutputStream();

        response.setContentType("image/jpeg");

        IOUtils.copy(fileInputStream, outputStream);

        fileInputStream.close();
        outputStream.close();
    }
}
